Suction cleaner



July 13 1943- w. N. PATTERSON SUCTION CLEANER Filed Feb. 27, 1941 nl N MR. ww $5 N EN hw QN wm. x n .l 5 IHA.. \\\W l um I. A m Hm, 1f lunm. lll Hr`|\||l. Qm. u .l l l/w, QN l- MN NN v QN MN MN n. Y 5.,? I

Patented July 13, 1943 UNITED. STATES 'PATENT OFFICE SUCTION CLEANER William N. Patterson, Detroit, Mich., assignor, by meme assignments, to The Sparks-Withington Company, Jackson, Mich., a corporation of Ohio Application February 21, 1941, serial No. 380,753

1 claim.` (ci. 23o-ssi 'I'his invention relates to suction cleaners and has particularly to do with that type of suction cleaner which is'operated by air under pressur Y with the use of a iet pump.

An .object of the present invention is to pr vide an improvement on suction cleaners of the type disclosed in Patterson Patent No. 2,183,150,

issued December 12, 1939. This patent shows a cleaner with'a jet arrangement for creating suction and a device called a vibrator to interrupt periodically the supply of air to the jet pump.

More specifically, it is an object of the present `invention to provide an air inlet device for the throat of the cleaner, which device will permit Y lvariation in position to comply Vwitlisources of air pressure available and to obtain maximum efficiency from each cleaner.

Another-object of the invention is to provide end to radial passage 34 which is spaced between the ends .of the shaft.' Threaded portions 35 and 38 are provided on the shaft to movably position the same in a threaded bore 31 in the head. These threaded portions seal the bore 31 from the Y outside of the head butpermit the shaft 3l to be the same threaded passage 3l and the tip 33 a spreading unit for the air jet to accentuate the Venturi effect in the throat of the cleaner.

Other objectsand features vof the invention, having to do with details of construction and operation, will be broughtout in the following description and claim.

Inthe drawing: Y

Fig. 1 is a side elevation, partially in section,

showingthe location of the jet and its relation to` the other parts of the cleaner.

Fig. 2 shows the handle portion of the cleaner whiclh would be joined to the headportion of Fig.

. Fig. 3 is an enlarged view'of'a portion of the cleaner head.

Fig. 41s a sectional view of the iet. Fig. 5 illustrates a modified Jet for different air pressures. ,i

Fig. 6 illustrates the jet and the spreader. In Fig. 1l the vacuum head is illustrated at il. It is provided with an entrance .nozzle 'II,' a -Venturi throat I2, and a dirt outlet; Il. The venturi is formed by a member which is slipped into a bore I5 in the head. A pipe I6 serves as a handle for the vacuum headand also as the means for carrying away the dirt. A raised portion 2li on the-head portion includes a valve 2| which is fully described in the' above mentioned patent. A flexible tube 22 connects the passages of portion with an air inlet tube 23 which is controlled by a valve 2l, details of which have not been shown.` The flexible portion 22 is provided to permit movement between -he'ad IB .and i `the lower end 25 of pipe I6. A suitable swivel Joint is provided to facilitate the managing of the head on the oor or other surface to be cleaned.

Leading from valve 2| is a passage 3l into which pulsating air will be projected imder pressure. The present invention resides in the Vmeans for connecting the passage 3l with the Venturi throat |2. This means is shownat Il and comprisesashafthavinganaxialborellopenat v33 at one end of the shaft,.and open at the other ing ofthe throat length and thereby permits movedback further until itis positioned properly with respect to the venturi I2. The cleaner may betested with a suitable suction testing mechanism to obtain the proper positioning of the tip 33. It will be noted that the threaded passage' is so positioned that the centerline of the shaft coincides with the centerline of the Venturi ,thoat.

Inparticularly large models, dimcultyhas been lexperienced in obtaining a proportionate suction for the amount of air pressure used. This prob- -lem has been solved by the provision of an air shaft, as illustrated in Fig. 6. In this shaft, a cone shaped element I0 is positioned, point toward, but spaced from. the open end of the bore in shaft Il. Asuitable bracket Il is used for this purpose. This cone causes an immediate spreading of the air as it leaves the bore and causes a pronounced increase in the Venturi effect. This arrangement also permits a shortenlarge designs without ungainly-proportions.

I claim: e v

A device of the character. described comprising' a cleaning nozzle in the form of an elongated ymember having a passageway therethrough, said nozzle having a gradually curved bend adjacent one endthereof, said bend resulting in said passageway having one end opening substantially laterally from said member to comprise an entrance nozzle and having the other endl comprising a dirt outlet, a Venturi throatin said passageway, said norzle having an integral head having an integral air inlet passage therein, and a shaft threaded in said nozzle at said bend projecting within and along said passageway toward said Venturi throat, :said shaft having an axial bore open at the end towards said throat and closed at the other end. said' shaft having lateral passage means between its endsproviding communication between said inlet and said bore. said Aother end of'said shaft extending to the outside of said nozzle to present said other end in posi-l tion io. be readily adjusted.

. I N. PATTERSON. 

